I wouldn't call it dreck....at the end of the day, it is still data. Sure, there are always variables at play that can't necessarily be quantified. But it does provide some valuable information re: the advantage provided by an aero lid.

I am calling complete and utter BS on that data. No way can you convince me that all things being equal in a 200m sprint a person wearing an Evade is 2.6 meters ahead of a person wearing a Prevail unless the latter is using the helmet as a drag chute.

Not sure about those numbers but in hanging with some tri guys, they are ruthless (and sometimes clueless) about speed and no doubt aero makes a difference. Especially how high our noggins sit on those bikes in the road position.

For all the naysayers claiming the new Giro Air attack will be hot, without actually trying one, they are not particularly hot in my experience. I wanted a helmet with few vents to keep the sun off my scalp while undergoing efudex treatment. Kind of a medical necessity for me. I still sweat because I go hard. I sweat hard with or without a helmet. My previous helmet is a Lazer and it funnels sweat into my right eye. It is awful and it is full on vents. Of course it does not get that hot here although this weekend is looking like low 30's so I may have further test results soon.

That Specialized does look odd to me though. I prefer round and plain looking helmets as opposed to finned ones with funky hole designs and spacy patterns.

I like the claim on time saved. Let's see, if I put 20,000 on those helmets over the next few years, at 46 seconds/40k, that's about 10 hours. Is there any way I can withdraw that 10 hours all at once so I can do something useful with it?

It looks like a crêpe or a cowpie. Buy why buy it now? Next year or the next, it will be 20.03% lighter and 14.003% more aero and it will "produce" 4.056% more power. Specialized, the marketing specialists.